Smokestack painter



Feb. 18, 1936. J w ALLEN 2,030,840

SMCIKESTACK PAINTER Filed Aug. 1, 1934 3 Sheets-Sheet 1 ii i l l 55 I Inventor Jaw W/Zlew flltorney Feb. 18, 1936.

J. w. ALLEN SMOKESTACK PAINTER Fil ed Aug. 1, 1954 s Sheets-Sheet 2 Invcnlor J o/Lw Wdllen/ fl Home y Feb. 18, 1936.

J. W. ALLEN SMOKESTACK PAINTER Filed Aug. 1, 1954 3 Sheets-Sheet 3 Inventor Qqllorney Patented Feb. 18, 1936 SMOKESTAGK PAINTER John Walter Allen. Greenwood, Miss" assignor of forty-nine per cent to W. M. Blain, Greenwood,

Application August 1, 1934, Serial No. 737,994

1 Claim.

The present invention relates to new and useful improvements in machines for painting smoke stacks and other metal surfaces and has for its primary object to provide a novel construction, combination and arrangement of parts through the medium of which the machine will climb the stack or other surface under its own power.

Other objects of the invention are to provide a painting machine of the aforementioned character which will be comparatively simple in construction, strong, durable, highly emcient and reliable in use, compact, light in weight and which may be manufactured and operated at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several I views, and wherein:-

bight portion of the Figure 1 is a view in side elevation of a painting machine constructed in accordance with the present invention, showing the same in operation on a stack.

Figure 2 is a view in front elevation thereof.

Figure 3 is a view in vertical section through the drive gears, 3-3 of Figure 2.

Figure 4 is a view in front elevation of the core of the electromagnet which also constitutes the frame or chassis of the machine.

Figure 5 is a view in side elevation of the magnet core. a

Figure 6 is a detail view in front elevation of the support for the'motor and the paint container.

Figure 7 is a detail view in side elevation of the motor and paint container support.

Figure 8 is a detail view in front elevation of the bracket which supports the gear assembly.

Figure 9 is a detail member shown in Figure 8.

Figure 10 is a detail view in rear elevation of the member shown in Figures 8 and 9.

Referring now to the drawings in detail, it will be seen that the embodiment of the present invention which has been illustrated comprises an electro-magnet which is designated generally by the reference numeral I. As illustrated to advantage in Figures 4 and 5 of the drawings, the core 2 of the electro-magnet has mounted on its ends yokes 3 and 4 the legs of which are provided with aligned spindles 5 of tubular form. The yoke 3 is further provided with a counterbored opening 6, the purpose of which will be presently set forth, Journaled on 16 drives a shaft taken substantially on the line view in bottom plan of the the trunnions 5 are magnetic wheels I which support the machine on the metallic stack 8 or other metal surface which is being painted.

The tubular spindles 5 constitute bearings in which transverse shafts 9 and III are journaled, 5 said shafts 9 and I0 having fixed thereon pneumatic tire equipped traction wheels I I. The traction wheels I l are operatively connected with each other by chain and sprocket connections l2.

Mounted on the lower yoke 4 is a bracket I3 10 in which a substantially sleeve-like bearing I4 is mounted. The bracket l3 includes an integral hangar I5 upon which a reversible electric motor I6 and a container i! are mounted, the container I! being for the reception of the paint. The motor I8 which is journaled in the bearing l4 and which has fixed on the upper end a pinion gear l9. Mounted on the upper end portion of the bearing I4 is an angular bracket 20 having mountedtherein a bearing 2| in which 20 a shaft 22 is journaled, one end portion of the bearing 2| being engaged in the opening 8 of the upper yoke 3. One end portion of the shaft 22 is journaled in the reduced inner end portion of the opening 6. This is best seen in Figure 3 of the drawings. Fixed on the outer end of the shaft 22 is a comparatively large beveled gear 23 which is in mesh with the gear l9. Fixed on an inner portion of the shaft 22 and operable in the opening 8 is a worm 24 which is operatively engaged with a worm gear 25 which is keyed on the shaft 9. It will thus be seen that the drive or traction wheels H are operatively connected to'the electric motor l6 for actuation thereby.

Extension brackets 26 and 21 are mounted on the brackets l3 and 20, respectively, for supporting a spray pipe 28 having a T-head 28 on its upper end which is provided with spray nozzles 30. The lower, end of the pipe 28 is connected to the top of the paint container l1 by a flexible 40 conduit 3|. It may be well to here mention that the container i1 is airtight and provided with a filling cap 32. Air under pressurefrom a suitable source of supply is introduced into-the container I! through a flexible conduit 33.

l\" viunted on an upper portion of the pipe 28 is a horizontally extending shield 34. which protectsthe machine from the paint. The reference numeral 35 designates a. brace for the shield 34. The conductor wires are connected to the electro-magnet I as at .36.

In operation, the machine is placed in position on the stack and the electro-magnet I is energized for holding the machine to the stack through the medium of the wheels I. Then, the reversible electric motor I6 is energized for driving the traction wheels II for causing the machine to climb the stack or to lower itself on said stack. By using an electric motor of the reversible type the machine may be caused to move back and forth over horizontal surfaces if desired. When the air under pressure is injected into the container l1, the paint therein is ejected through the flexible conduit 3|, the pipe 28, etc., and sprayed by the nozzles indicated in Figure 1 of the drawings. While the magnetic wheels I will adhere to the surface of the stack at all times when energized, the traction wheels H may be regulated for engagement with the surface of stacks of different curvatures by regulating the air pressure inthe pneumatic tires of said traction wheels H.

It is believed that the many advantages of a painting machine constructed in accordance with the present invention will be readily understood, and although a preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invenion as claimed.

on the work as clearly What is claimed is:--

A climbing machine comprising an electromagnet including a core, yokeson the ends of said core, tubular spindles projecting laterally from the yokes, magnetic wheels journaled on said tubular spindles and magnetically connected with the magnet, shafts journaled in the tubular spindles, traction wheels fixed on the shafts, an

electric motor supported on the electro-magnet, and means operatively connecting the traction wheels to said electric motor, said means including a bracket mounted on the electro-magnet, a bearing mounted in said bracket, a shaft journaled in said bearing and operatively connected to the electric motor for actuation thereby, an angular bracket mounted on said bearing, a bearing mounted on the second-named bracket at right angles to the first-named bearing, a shaft journaled in the second-named bearing, gears operatively connecting the second and thirdnamed shafts, a gear fixed on one of the firstnamed shafts in one of said yokes, and a gear fixed on the third-named shaft and operatively engaged with the third-named gear.

JOHN WALTER ALLEN. 

